Hubert kuckelkorn and emil saupe



No. 752,986. PATENTED PEB. 23, 1904.

H. KUCKELKORN 6v E. SAUPE.

PHOTOGRAPHIC DEVELOPING APPARATUS. APPLIGATION FILED 1pm: 29, 1903.

No. rmasse.

UNITED STATES Patented February 23, 1904.

PATENT OFFICE.

PHOTOGRAPHIC DEVELOPING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 752,986, dated February23, 1904. Application led June 29, 1903. Serial No. 163,650. (No model.)

T0 a/ZZ whom, t may concern:

Be it known that we, HUBERT KUCKELKORN and EMIL SAUPE, subjects of theKing of Prussia, German Emperor, residing at Erfurt, in the Kingdom ofPrussia, German Empire,have invented certain new and useful Improvementsin Photographic Developing Apparatus, of which the following is aspecification.

Our invention relates to an apparatus for use in developing photographicplates or films in daylight or artificial light.

The invention comprises a casing intended to receive the plate or filmto be developed and admitting only red light, said casing being more orless transparent and provided with an inlet and an outlet for liquids,which can be closed, as well as with a light-proof cover. In thisapparatus the plate or the film can therefore be conveniently watchedduring the treatment. By using an apparatus according to this inventiona dark chamber and other accessories hitherto required for developingbecome unnecessary.

An apparatus according to this invention is shown, by way of example, inthe accompanying drawings, in which- Figure 1 is a perspective view.Fig. 2 is a vertical cross section; Eig. 3, a horizontal cross-section,and Fig. 4 a detail view.

The front and back of the receptacle or casing 1, made of any desiredsuitable material, are `provided with red-glass panes 2. In this way theinterior 3 of the casing 1 becomes accessible only to red light and canbe easily examined from the outside, as the red panes 2 coincide, and aphotographic plate or film placed in the interior of the casing 1 can beeasily seen from the outside. The top of the casing is countersunk andfurther provided with a longitudinal slot 4, through which the plate tobe developed is introduced into the chamber. This slotted top is closedin a lightproof manner by a cover 5, provided with rubber or likepacking, hinged at one end to the casing 1 by means of hinges 6, and atthe other end held closed by a clamp or other suitable closing device 7.Instead of this hinged cover 5 a sliding cover could of course be used.The side walls 8 of the casing are provided with grooves 9 for receivingand guiding the edges of the plate introduced through the slot 4. Thelbottom 10 is also provided with a groove corresponding to the grooves 9.At the top of one of the sides 8 of the casing is arranged afunnel-shaped inlet 12 for supplying the liquid to the interior of theapparatus, the funnel being provided with a cock 11, while the lower endof the other side of the casing is provided with a draw-off pipe 14,with a cock 13.

The arrangement of the guide -grooves 9 and of the slot 4 for the plateto be developed has for its object to save as much as possible of thedeveloping and fixing liquids, while at the same time giving the plateor film an ample quantity of liquid on the picture side, the back notreceiving any or only very little passing between the edges of the plateand the grooves.

In order to enable liquid to be introduced when the casing is in eithera vertical or horizontal position, ,the inlet-funnel 12 is formed andarranged so that it can be turned through an angle of ninety degrees. Inthis way the liquid-chamber can be filled almost completely without theplate being touched, whereupon the picture side is uniformly floodedwith liquid by shaking or turning the apparatus.

The method of using the apparatus described is as follows: The exposedplateis removed from the dark slide under a light-proof black cloth orchanging bag or in a dark chamber where such is available and afteropening the cover 5 is introduced into the interior of the casing 1through the slot 4. The cover 5 is then closed and the apparatus, withthe plate, can then be exposed to any day or artificial light. The inlet12 is opened and developer introduced into the interior. In introducingthe plate care must be taken to have the film side turned toward theliquid-inlet. As red light enters through both the oppositely-arrangedred glasses 2 the process of development of the plate can be easily andconveniently watched even better than in the best dark room. Theapparatus can be held against light without any injury to the plate.After the plate has been developed the cock 13 is opened and thedeveloper allowed to iiow out through the pipe 14. Then both cocks 11and 13 are opened IOO and clean Water is passed through the apparatus.After sufficient rinsing the drain-cock 13 is closed and the fixingsolution introduced through the inlet-funnel l2 and the plate fixed inthe usual way. After the fixing-bath has been discharged the plate canbe removed by opening the cover 5 and placed to dry after the usualwashing operation. v

Having now particularly described and ascertained the nature of our saidinvention and in what manner the same is to be performed, we declarethat what we claim is- A photographic developing apparatus consisting ofa receptacle having front and rear walls of transparent material and acountersunk portion in its top, inwardly-extending ribs integral withthe end walls and the bottom of said receptacle, said ribs provided withguide-grooves and arranged at a point slightly removed from one sidewall of the receptacle and that portion of the receptacle between saidribs and the other side wall forming a chamber for the developingliquid, said receptacle further provided in its top with a slot havingthe ends thereof registering with guidegrooves of the ribs of the endwalls, an adjustable and closable inlet-pipe directly communicating withsaid chamber near one end thereof, a closable discharge-pipecommunicating directly with the said chamber near the other end thereof,a hinged cover adapted to be seated in the countersunk portion of saidtop, said cover closing said slot, and a latch for securing said coverin its closing position, substantially as herein shown and described.

In testimony whereof we have hereunto set our hands in presence of twosubscribing witnesses.

HUBERT KUCKELKGRN. EMIL SAUPE.

l l/Vitnesses:

MAX MEYER, VILHELM BIND EWALD.

